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      <body>
        <h3>C0 code coverage information</h3>
        <p>Generated on 09-01-&apos;08 with <a href='http://eigenclass.org/hiki/rcov'>rcov 0.8.1.2</a>
        </p>
        <hr /><pre><span class='marked0'>Code reported as executed by Ruby looks like this...
</span><span class='marked1'>and this: this line is also marked as covered.
</span><span class='inferred0'>Lines considered as run by rcov, but not reported by Ruby, look like this,
</span><span class='inferred1'>and this: these lines were inferred by rcov (using simple heuristics).
</span><span class='uncovered0'>Finally, here&apos;s a line marked as not executed.
</span></pre>                       
    <table class='report'>
      <thead>
        <tr>
          <td class='heading'>Name</td>
          <td class='heading'>Total lines</td>
          <td class='heading'>Lines of code</td>
          <td class='heading'>Total coverage</td>
          <td class='heading'>Code coverage</td>
        </tr>
      </thead>
      <tbody>
        <tr class='light'>
          <td>
            <a href='lib-authenticated_system_rb.html'>lib/authenticated_system.rb</a>
          </td>
          <td class='lines_total'>
            <tt>128</tt>
          </td>
          <td class='lines_code'>
            <tt>65</tt>
          </td>
          <td>
            <table cellspacing='0' cellpadding='0' align='right'>
              <tr>
                <td>
                  <tt class='coverage_total'>84.4%</tt>&nbsp;</td>
                <td>
                  <table cellspacing='0' class='percent_graph' cellpadding='0' width='100'>
                    <tr>
                      <td class='covered' width='84' />
                      <td class='uncovered' width='16' />
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                </td>
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          </td>
          <td>
            <table cellspacing='0' cellpadding='0' align='right'>
              <tr>
                <td>
                  <tt class='coverage_code'>69.2%</tt>&nbsp;</td>
                <td>
                  <table cellspacing='0' class='percent_graph' cellpadding='0' width='100'>
                    <tr>
                      <td class='covered' width='69' />
                      <td class='uncovered' width='31' />
                    </tr>
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                </td>
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      </tbody>
    </table><pre><span class="marked0"><a name="line1"></a>  1 module AuthenticatedSystem
</span><span class="marked1"><a name="line2"></a>  2   protected
</span><span class="inferred0"><a name="line3"></a>  3     # Returns true or false if the user is logged in.
</span><span class="inferred1"><a name="line4"></a>  4     # Preloads @current_user with the user model if they're logged in.
</span><span class="marked0"><a name="line5"></a>  5     def logged_in?
</span><span class="marked1"><a name="line6"></a>  6       current_user != :false
</span><span class="marked0"><a name="line7"></a>  7     end
</span><span class="inferred1"><a name="line8"></a>  8     
</span><span class="inferred0"><a name="line9"></a>  9     # Accesses the current user from the session.  Set it to :false if login fails
</span><span class="inferred1"><a name="line10"></a> 10     # so that future calls do not hit the database.
</span><span class="marked0"><a name="line11"></a> 11     def current_user
</span><span class="marked1"><a name="line12"></a> 12       @current_user ||= (login_from_session || login_from_basic_auth || login_from_cookie || :false)
</span><span class="marked0"><a name="line13"></a> 13     end
</span><span class="inferred1"><a name="line14"></a> 14     
</span><span class="inferred0"><a name="line15"></a> 15     # Store the given user in the session.
</span><span class="marked1"><a name="line16"></a> 16     def current_user=(new_user)
</span><span class="marked0"><a name="line17"></a> 17       session[:user] = (new_user.nil? || new_user.is_a?(Symbol)) ? nil : new_user.id
</span><span class="marked1"><a name="line18"></a> 18       @current_user = new_user
</span><span class="inferred0"><a name="line19"></a> 19     end
</span><span class="inferred1"><a name="line20"></a> 20     
</span><span class="inferred0"><a name="line21"></a> 21     # Check if the user is authorized
</span><span class="inferred1"><a name="line22"></a> 22     #
</span><span class="inferred0"><a name="line23"></a> 23     # Override this method in your controllers if you want to restrict access
</span><span class="inferred1"><a name="line24"></a> 24     # to only a few actions or if you want to check if the user
</span><span class="inferred0"><a name="line25"></a> 25     # has the correct rights.
</span><span class="inferred1"><a name="line26"></a> 26     #
</span><span class="inferred0"><a name="line27"></a> 27     # Example:
</span><span class="inferred1"><a name="line28"></a> 28     #
</span><span class="inferred0"><a name="line29"></a> 29     #  # only allow nonbobs
</span><span class="inferred1"><a name="line30"></a> 30     #  def authorized?
</span><span class="inferred0"><a name="line31"></a> 31     #    current_user.login != &quot;bob&quot;
</span><span class="inferred1"><a name="line32"></a> 32     #  end
</span><span class="marked0"><a name="line33"></a> 33     def authorized?
</span><span class="marked1"><a name="line34"></a> 34       logged_in?
</span><span class="marked0"><a name="line35"></a> 35     end
</span><span class="inferred1"><a name="line36"></a> 36 
</span><span class="inferred0"><a name="line37"></a> 37     # Filter method to enforce a login requirement.
</span><span class="inferred1"><a name="line38"></a> 38     #
</span><span class="inferred0"><a name="line39"></a> 39     # To require logins for all actions, use this in your controllers:
</span><span class="inferred1"><a name="line40"></a> 40     #
</span><span class="inferred0"><a name="line41"></a> 41     #   before_filter :login_required
</span><span class="inferred1"><a name="line42"></a> 42     #
</span><span class="inferred0"><a name="line43"></a> 43     # To require logins for specific actions, use this in your controllers:
</span><span class="inferred1"><a name="line44"></a> 44     #
</span><span class="inferred0"><a name="line45"></a> 45     #   before_filter :login_required, :only =&gt; [ :edit, :update ]
</span><span class="inferred1"><a name="line46"></a> 46     #
</span><span class="inferred0"><a name="line47"></a> 47     # To skip this in a subclassed controller:
</span><span class="inferred1"><a name="line48"></a> 48     #
</span><span class="inferred0"><a name="line49"></a> 49     #   skip_before_filter :login_required
</span><span class="inferred1"><a name="line50"></a> 50     #
</span><span class="marked0"><a name="line51"></a> 51     def login_required
</span><span class="marked1"><a name="line52"></a> 52       authorized? || access_denied
</span><span class="marked0"><a name="line53"></a> 53     end
</span><span class="inferred1"><a name="line54"></a> 54 
</span><span class="inferred0"><a name="line55"></a> 55     # Redirect as appropriate when an access request fails.
</span><span class="inferred1"><a name="line56"></a> 56     #
</span><span class="inferred0"><a name="line57"></a> 57     # The default action is to redirect to the login screen.
</span><span class="inferred1"><a name="line58"></a> 58     #
</span><span class="inferred0"><a name="line59"></a> 59     # Override this method in your controllers if you want to have special
</span><span class="inferred1"><a name="line60"></a> 60     # behavior in case the user is not authorized
</span><span class="inferred0"><a name="line61"></a> 61     # to access the requested action.  For example, a popup window might
</span><span class="inferred1"><a name="line62"></a> 62     # simply close itself.
</span><span class="marked0"><a name="line63"></a> 63     def access_denied
</span><span class="uncovered1"><a name="line64"></a> 64       respond_to do |accepts|
</span><span class="uncovered0"><a name="line65"></a> 65         accepts.html do
</span><span class="uncovered1"><a name="line66"></a> 66           store_location
</span><span class="uncovered0"><a name="line67"></a> 67           redirect_to login_url
</span><span class="uncovered1"><a name="line68"></a> 68         end
</span><span class="uncovered0"><a name="line69"></a> 69         accepts.xml do
</span><span class="uncovered1"><a name="line70"></a> 70           headers[&quot;Status&quot;]           = &quot;Unauthorized&quot;
</span><span class="uncovered0"><a name="line71"></a> 71           headers[&quot;WWW-Authenticate&quot;] = %(Basic realm=&quot;Web Password&quot;)
</span><span class="uncovered1"><a name="line72"></a> 72           render :text =&gt; &quot;Could't authenticate you&quot;, :status =&gt; '401 Unauthorized'
</span><span class="uncovered0"><a name="line73"></a> 73         end
</span><span class="uncovered1"><a name="line74"></a> 74       end
</span><span class="uncovered0"><a name="line75"></a> 75       false
</span><span class="uncovered1"><a name="line76"></a> 76     end  
</span><span class="inferred0"><a name="line77"></a> 77     
</span><span class="inferred1"><a name="line78"></a> 78     # Store the URI of the current request in the session.
</span><span class="inferred0"><a name="line79"></a> 79     #
</span><span class="inferred1"><a name="line80"></a> 80     # We can return to this location by calling #redirect_back_or_default.
</span><span class="marked0"><a name="line81"></a> 81     def store_location
</span><span class="uncovered1"><a name="line82"></a> 82       session[:return_to] = request.request_uri
</span><span class="uncovered0"><a name="line83"></a> 83     end
</span><span class="inferred1"><a name="line84"></a> 84     
</span><span class="inferred0"><a name="line85"></a> 85     # Redirect to the URI stored by the most recent store_location call or
</span><span class="inferred1"><a name="line86"></a> 86     # to the passed default.
</span><span class="marked0"><a name="line87"></a> 87     def redirect_back_or_default(default)
</span><span class="marked1"><a name="line88"></a> 88       redirect_to(session[:return_to] || default)
</span><span class="marked0"><a name="line89"></a> 89       session[:return_to] = nil
</span><span class="inferred1"><a name="line90"></a> 90     end
</span><span class="inferred0"><a name="line91"></a> 91     
</span><span class="inferred1"><a name="line92"></a> 92     # Inclusion hook to make #current_user and #logged_in?
</span><span class="inferred0"><a name="line93"></a> 93     # available as ActionView helper methods.
</span><span class="marked1"><a name="line94"></a> 94     def self.included(base)
</span><span class="marked0"><a name="line95"></a> 95       base.send :helper_method, :current_user, :logged_in?
</span><span class="marked1"><a name="line96"></a> 96     end
</span><span class="inferred0"><a name="line97"></a> 97 
</span><span class="inferred1"><a name="line98"></a> 98     # Called from #current_user.  First attempt to login by the user id stored in the session.
</span><span class="marked0"><a name="line99"></a> 99     def login_from_session
</span><span class="marked1"><a name="line100"></a>100       self.current_user = User.find_by_id(session[:user]) if session[:user]
</span><span class="marked0"><a name="line101"></a>101     end
</span><span class="inferred1"><a name="line102"></a>102 
</span><span class="inferred0"><a name="line103"></a>103     # Called from #current_user.  Now, attempt to login by basic authentication information.
</span><span class="marked1"><a name="line104"></a>104     def login_from_basic_auth
</span><span class="marked0"><a name="line105"></a>105       username, passwd = get_auth_data
</span><span class="marked1"><a name="line106"></a>106       self.current_user = User.authenticate(username, passwd) if username &amp;&amp; passwd
</span><span class="inferred0"><a name="line107"></a>107     end
</span><span class="inferred1"><a name="line108"></a>108 
</span><span class="inferred0"><a name="line109"></a>109     # Called from #current_user.  Finaly, attempt to login by an expiring token in the cookie.
</span><span class="marked1"><a name="line110"></a>110     def login_from_cookie      
</span><span class="marked0"><a name="line111"></a>111       user = cookies[:auth_token] &amp;&amp; User.find_by_remember_token(cookies[:auth_token])
</span><span class="marked1"><a name="line112"></a>112       if user &amp;&amp; user.remember_token?
</span><span class="uncovered0"><a name="line113"></a>113         user.remember_me
</span><span class="uncovered1"><a name="line114"></a>114         cookies[:auth_token] = { :value =&gt; user.remember_token, :expires =&gt; user.remember_token_expires_at }
</span><span class="uncovered0"><a name="line115"></a>115         self.current_user = user
</span><span class="uncovered1"><a name="line116"></a>116       end
</span><span class="uncovered0"><a name="line117"></a>117     end
</span><span class="inferred1"><a name="line118"></a>118 
</span><span class="marked0"><a name="line119"></a>119   private
</span><span class="marked1"><a name="line120"></a>120     @@http_auth_headers = %w(Authorization HTTP_AUTHORIZATION X-HTTP_AUTHORIZATION X_HTTP_AUTHORIZATION REDIRECT_X_HTTP_AUTHORIZATION)
</span><span class="inferred0"><a name="line121"></a>121 
</span><span class="inferred1"><a name="line122"></a>122     # gets BASIC auth info
</span><span class="marked0"><a name="line123"></a>123     def get_auth_data
</span><span class="marked1"><a name="line124"></a>124       auth_key  = @@http_auth_headers.detect { |h| request.env.has_key?(h) }
</span><span class="marked0"><a name="line125"></a>125       auth_data = request.env[auth_key].to_s.split unless auth_key.blank?
</span><span class="marked1"><a name="line126"></a>126       return auth_data &amp;&amp; auth_data[0] == 'Basic' ? Base64.decode64(auth_data[1]).split(':')[0..1] : [nil, nil] 
</span><span class="inferred0"><a name="line127"></a>127     end
</span><span class="inferred1"><a name="line128"></a>128 end
</span></pre><hr />    <p>Generated using the <a href='http://eigenclass.org/hiki.rb?rcov'>rcov code coverage analysis tool for Ruby</a> version 0.8.1.2.</p><p>
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